Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in ____________ in the electrical resistance of the wire ?

Related Mcqs:

1. Strain gage pressure transducers are used to measure _____________ pressures?

   A. Gage as well as vacuum
   B. Absolute as well as differential
   C. Both A. and B.
   D. Neither A. nor B.

2. With increase in temperature, the electrical conductivity of the platinum used in the resistance thermometer ?

   A. Increases
   B. Decreases
   C. Remain constant
   D. Increases exponentially

3. Ordinary mercury in glass thermometer is used for measuring temperature upto 120°C. However, for measuring higher temperature upto __________ °C, thermometer is made by filling nitrogen under pressure above the mercury, which stops the evaporation of mercury and reduces the chance of broken thread of mercury?

   A. 250
   B. 350
   C. 550
   D. 700

4. ____________ stability method uses open loop transfer function?

   A. Nyquist
   B. Mikhailov
   C. Ruth
   D. None of these

5. Bode stability method uses ____________ loop transfer function?

   A. Open
   B. Closed
   C. Either A. or B.
   D. Neither A. nor B.

6. Hot wire anemometer is used for the measurement of___________________?

   A. Flow rates of fluids
   B. Flow rates of granular solids
   C. Very high temperature
   D. Thermal conductivity of gases

7. The maximum service temperature for fibre glass used as thermocouple wire insulation material is __________ °C?

   A. 250
   B. 500
   C. 750

   D. 1000

8. Which of the following relates the emf. generated in a single homogeneous wire to the temperature difference ?

   A. Peltier effect
   B. Thomson effect
   C. Seebeck effect
   D. None of these

9. Out of the following thermocouple wire insulating material, the highest temperature rating is for________________?

   A. Teflon
   B. Ceramic fibre
   C. Asbestos
   D. Fibre glass

10. The term analogous to the electrical current in a thermal system is the_________________?

    A. Temperature difference
    B. Heat flow rate
    C. Heat content in the system
    D. None of these